SEARCH Articles Figures Tables Earth observing system Extended Acceptor Systems Observation of Photoinduced Electron Transfer Global Earth observation system Global Observing System Global Ocean Observing System Global Ocean Observing System GOOS) How would Solar System formation look to an outside observer Integrated Ocean Observing System Molecular systems time-dependent observables Observables and their properties for a total system Observables rotating systems Observations on Metals in Natural Systems Other Observables in Rotating Systems Reduced observer system Step 7 Establish a system for behavior observation, feedback, and problem solving Thin film multilayer systems observation